[1] Chinese Univ, Prince Wales Hosp, Dept Surg, Hong Kong, Peoples R China
[2] Asan Med Ctr, Dept Gastroenterol, Seoul, South Korea
[3] Massachusetts Gen Hosp, Gastrointestinal Unit, Pancreas Biliary Ctr, Boston, MA 02114 USA
[4] Indiana Univ Hosp, Dept Med, Div Gastroenterol, 550 N Univ Blvd, Indianapolis, IN 46202 USA
[5] Chulalongkorn Univ, Fac Med, Dept Med, Pancreas Res Unit, Bangkok, Thailand
[6] Chulalongkorn Univ, Fac Med, Dept Med, Gastrointestinal Endoscopy Excellent Ctr, Bangkok, Thailand
[7] King Chulalongkorn Mem Hosp, Bangkok, Thailand
[8] Chinese Peoples Liberat Army Gen Hosp, Dept Gastroenterol, Beijing, Peoples R China
[9] Div GI Hepatol, Hershey, PA USA
[10] Penn State Univ, Canc Inst, Penn State Hershey Med Ctr, Hershey, PA USA
[11] Seoul Natl Univ, Dept Internal Med, Coll Med, Seoul, South Korea
[12] Natl Univ Singapore, Dept Med, Singapore, Singapore